Connector for electrical wires, cables, and conduits.



R. W. PITTMAN. cor'mzcwon FOR ELE GTRIOAL WIRES, GABL ES, AND GONDUITS.APPLIOATIONIIL'ED 00T.11, 1907.

Patented Feb. 2, 1909.

5 Woe 14 4306 @Mfi REINHART W. PITTMAN, or NEW YORK, N. Y.

CONNECTOR FOR ELECTRICAL WIRES, GABLES, AND CONDUITS.

Specification of Letters Patent.

Patented Feb. 2, 1909.

Application filed October 11, 1907. Serial No. 396,896.

T 0 on whom ti may concern:

Be it known that I, R-EINHART W. Prr'r- MAN, of the borough ofManhattan, city, county, and State of New York, have invented a certainnew and useful Improvement in Connectors for Electrical Wires, Cables,and Conduits, of'which the following is a specification.

This invention relates to devices in the nature of fittings designed forrigidlv securing together the ends of electric conductors and conduits,and for the attachment of the same to panel, outlet or junction boxes,-

For use as a coupling for the attachment of the conductor or conduitto'a box, or the 'like, connection of the coupling is made with abushing which is rigidly aflixed to the box.

In the drawing accompanying the present specification, Figure 1 is asectional view illustrating features of the invention as applied to thesecuring of a cable conduit to a box. Fig. 2 is a race view of one ofthe coupling pieces assembled with its bushing,

a portion of the box being in section. F g.

3 1s a perspective view of the bushin" indicated in the precedingfigures. Fig. 4 is a perspective view of one of the clamping pieces.Fig. 4* is a detail of the inwardly- -projecting edge of the clampingpiece. Fig.

5 is mainly an elevation of a modified construction parts being brokenaway.

Similar characters of reference designate corresponding parts in all thefigures.

The clamping pieces constituting the present coupling are substantiallyalike and are preferably made of stamped metal, although other methodsof manufacture may be adopted.

Referring to Figs. 1 to 4, inclusive, in which the invention isillustrated as embodied in a device for connecting an armored cable orconduit to a; box, 2, 2, designate a pair of clamping pieces curvedtransversely to embrace conduit 3, and having substantiallydiametrically opposite ears 2 perforated for the passage of tighteningand holding devices, as bolts 4.

A box is indicated and designated by 5. An opening in this box isadapted to receive the threaded stem 6 of a bushing 6, which may be heldin position by a nut 7 engaging .Wltll the thread of the stem and whenin its assembled position, holding a shoulder (i on the bushing firmlyagainst the outer surface of the box. v y

For the purpose of securing th'e'couplmg to the bushing, I may adopt themeans indicated in Figs. 1, 2, 3 and 4, in which bushing 6 is shown asprovided with lateral projections 8, 8, adapted to pass through openings9 in the clamping pieces 2, 2, and firmly locking the coupling to thebushing. Instead, however, of perforating the clamping pieces to receivethe projections on the bushing, each clamping niece may be formed withan inwardly-recessed hook-shaped end 10, (see Fig. 5), adapted to fitover an annular rib or projection 11 on the bushing. This construction,it is evident, operates in substantially the same wayas the former oneto lock the assembled coupling and clamping conduit,'etc., to thebushing.

In the event of its being. desirable to have a still more positiveattachment of the armor or conduit with the coupling the latter ma beprovided with a projection, which, w en the parts are assembled, extendsinto the encircled conduit. Thus, for instance, one of the clampingpieces, (see Fig. 4) may have one of its ends turned over to form ahelical, inwardly-extending projection 13, adapted to fit into thehelical crease present on the exterior of the usual flexible conduit.

It will be observed that both of the described constructions forattaching the coupling pieces to the bushing,- present oppositelydisposed, substantiallyparallel walls placed walls of project-ions 8, 8,or projection 11, and thereby hold the pieces firmly, yet removably, tothe bushin These walls construction shown in Fig. 5 and w" ,-'w, in theconstruction set forth in the remaining figures, and obviously lie inplanestrans verse to the axis of the assembled coupling pieces.

Having described my invention, I claim:

1. The combination with a bushing, adapted to be attached to a box, ofthe character described and having transversely extending oppositelydisposed substantially parallel walls lying adjacent tothe box when soattached, of a pair of removable clamping pieces having walls similar tothose described adapted to coacttherewith when the parts are assembled,and means for securing said clamping pieces together.

2. The combination with a bushing adapted to be attachedto a box of thecharacter described and having transversely extend adapted to coaot'withthe correspondingly of the pieces are designated by w, w, in the Iing oppositely disposed substantially paraldescribed and havingtransversely extendlel Walls lying adjacent to the box when so ing,oppositely disposed, substantially paralattached, of a pair of removableclamping lel Walls lying adjacent to the box when so 15 pieces securabletogether along one pair of attached, 01": a pair of removable clampincontiguous edges and having Walls similar pieces having Walls adapted toengage saic to those described adapted to coact theretransverse Walls ofthe bushin and to ex- With when the parts are assembled, ears protendaround said bushing, and means for jecting from the opposite pair ofcontiguous securing said clamping pieces together. edges of saidclamping pieces, and fastening i REINHART W. PITTMANv bolts engagingwith said ears. l itnesses:

3. The combination with a bushing adapt- I Pir'zsoiv L. VVnLLs, ed to beattached to a box of the character R. J. SACHERS.

